In the plastic model hobby the exact number of items manufactured is tracked. But it is far from public information....I'd think the model rail biz is the same. Why publish how much you are selling for the competition to analyze?? Why do so many think that everything a manufacture does needs to be posted on the net. I remember how you used to find out about new items....they showed up on the hobby shop shelves. Times have changed greatly....but there is still a lot of proprietary info out there.
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